Freddy Mack KD5FMU’s Toad’s Shell mod for the Retevis RT95 fits perfectly. This versatile mod also works with Yaesu FT-8800 and FT-857 radios.
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I need to test the inductance of the toroids before placing them in the scratch build signal generator.
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Elmar, KN4RZO, asks Dave for help figuring out what part of Single Side Band to use for the different ham bands and modes. Does it really matter? What will make you the most effective ham?
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Videographed and Edited by Teagan Kulbeth, KF0UTR
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Quansheng UV-K1 Performance Test | Real Power Output Results
Quansheng UV-K1 (Mini Kong) review – the tiny but powerful successor to the UV-K5!
This ultra-compact dual-band ham radio offers 5W VHF/UHF, wideband receive, AM airband, NOAA weather, USB-C charging, and excellent battery life in a pocket-sized package.
We test real-world performance, audio quality, range, and compare it directly with the UV-K5.
Is the Quansheng UV-K1 the best budget handheld radio in 2026?
👉 Get the Quansheng UV-K1: https://www.aliexpress.us/item/3256810323392461.html
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Build Your Own OFF-GRID Meshcore Repeater (Cheap + Easy Setup)
I built a cheap, solar-powered Meshcore repeater using AliExpress parts—here’s how it works and how you can build your own.
Gear in this video (AliExpress affiliate links)
10W (not really – more like 2W-3W) Solar Panel 👉 https://s.click.aliexpress.com/e/_c3UQp8TL
XIAO nRF52840 & Wio-SX1262 Kit Modules 👉 https://s.click.aliexpress.com/e/_c3nDxtFJ
915 MHz 5.5dBi Vertical Collinear Antenna 👉 https://s.click.aliexpress.com/e/_c3JKgHxR
915 MHz 3dBi Vertical Collinear Antenna 👉 https://s.click.aliexpress.com/e/_c4m9laqt
IP66 Box (smaller one) 👉 https://s.click.aliexpress.com/e/_c4aA1nYt
IP67 Box (the one I use in this video) 👉 https://s.click.aliexpress.com/e/_c3JkrCwD
18650 parallel battery holder (PH2.0-2P) 👉 https://s.click.aliexpress.com/e/_c4ambl8v
SMA Female Jack to N Female Jack Bulkhead 👉 https://s.click.aliexpress.com/e/_c2wi0w89
CN3791 MPPT Adjustable Solar Charger Board (6V) 👉 https://s.click.aliexpress.com/e/_c3N40SKZ
SMA to U.FL connectors 👉 https://s.click.aliexpress.com/e/_c2yqXBU1
RG178 N bulkhead to U.FL connector👉 https://s.click.aliexpress.com/e/_c4NcswNn
Waterproof Vent/Breather (M6 x 1.0-7)👉 https://s.click.aliexpress.com/e/_c2wu6fyZ
915 MHz SMA Bandpass filter 👉 https://s.click.aliexpress.com/e/_c4s2be0z
18650 5V USB-C Battery Charger 👉 https://s.click.aliexpress.com/e/_c3sLN4cl
18650 TP4056 Battery Module Charger 👉 https://s.click.aliexpress.com/e/_c3lplNJn
More Meshcore hardware here 👉 https://s.click.aliexpress.com/e/_c4mfmu9r
ThinkNode M1 👉 https://s.click.aliexpress.com/e/_c3RIZ369
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Next Evolution In Off Grid Long Haul Two Way Radio.
POC radios have been around for a few years now. They work as long as there is a cell tower within range. Take it into the back country and that’s where it fails. PocLink just released a new version & it works off Starlink or Cellular.
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Whats happening on Tank Radio for the up and coming Month of April 2026.
New Tanker Radio Gear:
New Tank Radio Pillow – https://www.etsy.com/listing/4295008136/tank-radio-pillow-for-amateur-radio
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Antenna Modeling for Beginners - Vertical Delta Loop (Part 6)
In this episode we take the delta loop from Part 5 and convert it into a vertically polarised delta loop. Using MMANA-GAL, we build and model a simple mono-band loop and explore how its radiation pattern compares to a vertical antenna.
In this video we:
• Convert a horizontal loop into a vertical loop
• Position the feedpoint for ~100Ω impedance
• Model a quarter-wave matching section (75Ω)
• Use wire scaling to tune the antenna
• Compare low-angle performance (5° take-off)
• Observe the bi-directional radiation pattern
You’ll also see how a vertical delta loop can behave a bit like a broadside array, producing useful gain in two directions.
This is a simple, practical example of how antenna shape and feedpoint position directly affect performance.
In the next episode we’ll move on to modelling an End-Fed Half-Wave (EFHW) antenna.
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